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Page:Popular Science Monthly Volume 90.djvu/56

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��Popular Science Monthly

���In spite of a five mile current, one hundred and fifty tons of pipe were laid in eighty hours. The work was carried on without mishap and has held against severe floods and record-breaking tides

��Laying Pipes in a Treacherous New Zealand River

WITH equipment hastily constructed to meet the difficulties of the occa- sion, a company of engineers laid pipe- lines across one of the swiftest of New Zealand streams, the Teremakau River. This pipe-line is an extension of the Government water-race to supply the Kumura gold fields. The sections of pipe were laid from specially constructed pon- toons, one being joined to the other as the pontoon progressed. The work was carried on without mishaps in spite of a five-mile current. Altogether one hundred and fifty tons of pipe were laid in eighty hours.

Since the pipe crossing has been installed, the river has experienced a number of severe floods. On one occasion its width increased from six hundred and fifty feet, which is normal, to nearly three thousand feet.

��A Fuel-Oil Burner Which Provides Ideal Combustion

ANEW fuel-oil burner has been designed by Grover C. Long, of Lakeland, Florida, to eliminate all free oil from the furnace and to give continuous operation, wide range of capacity and as nearly ideal vaporiza- tion and combustion as possible.

In the illustration the metal body contains a coil and a pipe which con- veys the steam-oil gas to the fur- nace. The adjusting wheel is used for varying the capacity of the coil, and the coil is heated by the steam enter-

��ing at the top of the body and passing around the coil. A guide maintains the coil centrally in the body. A head on the coil has slots through which the oil enters the body after being heated. A valve controls the oil supply, and also allows live 'steam to pass through the coil for cleaning purposes.

Fuel-oil is admitted into the coil through the oil valve, the coil being heated to a high temperature by the steam admitted at the top of the burner. The oil, in passing through the coil, is heated to a point at or above the flash and is ejected through a series of holes in the head, where it combines with the steam that flows in a different plane at a high velocity, atomizing and vaporizing the hot oil from the coil.

The vapor thus formed then flows at a reduced velocity along the conveying pipe and finally emerges into the furnace through the tip at the right of the illustration.




��ADJUSTING WHEEL Detail drawing showing the piping and construction of the fuel oil burner to be used in connection with furnaces

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